JPH0788997B2 - refrigerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Object of the Invention (Industrial field of application) The present invention is directed to cooling air from a cooler chamber with respect to three cooling chambers formed in a vertical direction inside a cabinet body. The present invention relates to a refrigerator having a structure in which it is circulated after being supplied and then returned to the cooler chamber.

(Prior Art) As this type of refrigerator, there is one having a configuration shown in FIGS. 4 to 6. That is, the inside of the refrigerator main body 1 forms a freezing compartment 2 as a first cooling compartment, a switching compartment 3 as a second cooling compartment, and a refrigerating compartment 4 as a third cooling compartment in order from the top, A cooler chamber 6 accommodating the cooler 5 is provided on the back wall of the chamber 2, and a fan 7 is provided above the cooler chamber 6.
The cool air in the cooler chamber 6 is supplied to each of the chambers 2, 3 and 4 by the operation of the fan 7 as shown by an arrow A in FIG. The cold air supplied to each of the chambers 2, 3 and 4 is returned to the cooling chamber 6 as indicated by an arrow B, in particular, to return the cold air of the refrigerating chamber 5 which is the third cooling chamber. To
A return duct 8 is provided. This return duct 8
Since the switching chamber 3 exists between the refrigerating chamber 4 and the cooler chamber 6, it is configured to pass through the side wall 3a of the switching chamber 3 as shown in FIGS. 5 and 6. Has been done. In addition, on the inner surfaces of the back walls of the switching chamber 3 and the refrigerating chamber 4, cold air outlets are provided, respectively.
Damper device for adjusting the supply of cold air from 9,10 1
1,12 are provided.

(Problems to be Solved by the Invention) However, in the above-mentioned conventional one, the return duct 8
Is passed through the side wall of the switching chamber 3, the side wall 3a
Considering the prevention of heat insulation deterioration, as shown in FIG.
Since the heat insulating thickness of the return duct 8 portion in the side wall 3a becomes thin, the overall thickness of the side wall 3a must be made thicker than the other portions in the end. Becomes smaller and the side wall 3a of the cabinet body 1 becomes thicker than other parts,
There was a defect that the appearance was bad.

The present invention has been made in view of the above circumstances, and an object thereof is to eliminate a portion of the side wall of the second cooling chamber where the thickness becomes thin. The thickness of the side wall can be made even thinner than the conventional one, in which the overall thickness must be increased.
It is an object of the present invention to provide a refrigerator in which the effective internal volume of the cooling chamber can be increased and the appearance can be improved.

[Structure of the Invention] (Means for Solving the Problems) The present invention includes a first cooling chamber and a second cooling chamber in order from top to bottom.
And a cooling chamber provided on the back wall of the first cooling chamber and a back wall of the second cooling chamber so as to be in contact with the inner surface of the back wall of the second cooling chamber. A damper device for adjusting the amount of cool air supplied from the cooler chamber to a cool air outlet opening on the inner surface of the back wall, and a return duct for circulating the cool air in the third cooler chamber to the cooler chamber. And a position in which the return duct contacts the inner surface of the back wall of the second cooling chamber and is arranged right next to the damper device, and the back wall and the side wall of the second cooling chamber are provided. It has a feature that it is configured to pass through the corner.

(Operation) In the second cooling chamber, the damper device is located on the inner surface of the back wall portion of the second cooling chamber, and the portion arranged right next to the damper device is a so-called dead space that is ineffective for accommodating the object to be cooled. There is. Therefore, according to the present invention, since the return duct is configured to pass through the position directly side by side with the damper device, the dead space portion can be used for disposing the return duct, and as a result, the side portion of the second cooling chamber can be provided. The wall does not have to be thick, and the effective internal volume of the chamber can be increased. In addition, since the portion right beside the damper device has a relatively large dead space, it is possible to ensure a sufficient thickness of heat insulation for the return duct and reduce the temperature influence on the second cooling chamber. is there. That is, since the return duct contributes to the cooling in the third cooling chamber and cool air having a relatively high temperature passes therethrough, the second cooling chamber is likely to have a temperature influence,
In the present invention, as described above, it is possible to sufficiently secure the heat insulating thickness and prevent the temperature influence. Further, since the return duct is passed through the corner portion of the back wall and the side wall even in the position aligned with the damper device, it is easy to position the return duct.

(Embodiment) An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

First, in FIG. 3, reference numeral 21 denotes a refrigerator main body, and inside thereof is a freezing chamber 2 as a first cooling chamber in order from top to bottom.
A switching chamber 23 as a second cooling chamber and a refrigerating chamber 24 as a third cooling chamber are partitioned by partition walls 25a and 25b, respectively. In addition, the vegetable compartment 26 (the third compartment) is provided below the refrigerating compartment 24.
The partition is formed. A cooler chamber 28 in which a cooler 27 is arranged is formed on the back wall of the freezing chamber 22,
Further, a fan 29 for circulating cold air is arranged above the cooler chamber 28. Cooler 27 in cooler room 28
By the operation of the fan 29, the air cooled by the air, that is, the cool air, as shown by an arrow A in FIG.
Is supplied to the freezing chamber 22 from the above, and is also supplied to the switching chamber 23 and the refrigerating chamber 24 through the supply duct 31. The cold air supplied to the freezing compartment 22 and the switching compartment 23 passes through the vent holes 32 and 33 formed in the partition wall 25a, respectively, as shown by arrow B, and the collective duct also formed in the partition wall 25a. The cold air in the refrigerating chamber 24 is returned to the cooler chamber 28 via 34, and as shown by an arrow C, the cool air passes through the return duct 41 described later and the collecting duct 34 described above.
Returned to.

As shown in FIG. 1, a damper device 35 is provided at the cold air outlet 31a of the supply duct 31 on the inner surface 23a of the rear wall of the switching chamber 23 so as to contact the inner surface 23a of the rear wall of the switching chamber 23. The damper device 35 is for adjusting the supply amount of cold air by controlling the opening degree or opening / closing of the cool air outlet 31a, and the driving unit 36 that operates according to the temperature.
And a damper plate 37 or the like which operates by this.

The inner part of the switching chamber 23 where the damper device 35 is located is partitioned by a cover plate 38 which is permeable to air. A damper device 39 for adjusting the supply amount of cool air is also provided on the inner surface of the back wall of the refrigerator compartment 24. 40 is a refrigerator room 24
An air collection duct having mouth portions 40a, 40a opening to the side,
This is formed on the partition wall 25b.

Reference numeral 41 denotes a return duct, which is in contact with the inner surface 23a of the back wall portion of the switching chamber 23, and is positioned directly beside the damper device 35, and is vertically arranged at a corner portion between the back wall and the side wall of the storage body 21. Are arranged in a direction, one end of which is in communication with the air collecting duct 40 and the other end is in communication with the collecting duct 34. Reference numeral 42 is a heat insulating material arranged around the damper devices 35 and 39.

Then, the cold air in the refrigerating chamber 24 is circulated to the cooler chamber 28 through the air collecting duct 40, the return duct 41, and further the collecting duct 34 described above.

In the present embodiment having the above-mentioned configuration, the portion right beside the damper device 35 is a so-called dead space which is not effective for accommodating the object to be cooled even without the cover plate 38. In consideration of this point, in the present embodiment, the return duct 41 is configured to pass through the position aligned side by side with the damper device 35, so the above-mentioned dead space portion can be effectively used for the arrangement of the return duct. As can be seen from the comparison between FIG. 3 of the present embodiment and FIG. 4 of the conventional example, unlike the conventional configuration in which the return duct is passed through the side wall of the switching chamber,
It is not necessary to increase the thickness of the side wall of the switching chamber 23, which increases the effective internal volume of the switching chamber 23 and also the return duct.
Since the installation space of 41 is originally a dead space, the effective internal volume of the switching chamber 23 is not reduced by the return duct 41, and a large effective internal volume of the switching chamber 23 can be secured as a whole, and at the same time, Since the wall thickness can be made uniform, the appearance is also improved.

In addition, since the portion right beside the damper device 35 is a relatively wide dead space, it is possible to secure a sufficient thickness of heat insulation for the return duct 41, and to prevent the temperature influence on the switching chamber 23 which is the second cooling chamber. It is possible to reduce it. That is, the return duct 41 contributes to cooling in the refrigerating chamber 24, which is the third cooling chamber, and cool air having a relatively high temperature passes therethrough, so that the switching chamber 23 is likely to be affected by temperature. As described above, it is possible to sufficiently secure the heat insulating thickness and prevent the influence of temperature. Further, since the return duct 41 is passed through the corner portion of the back wall and the side wall even in the position side by side with the damper device 35, the return duct 41 can be easily positioned and the manufacturability can be improved. it can.

In the above embodiment, the freezing chamber is used as the first cooling chamber,
Although the switching chamber is illustrated as the second cooling chamber and the refrigerating chamber is illustrated as the third cooling chamber, each cooling chamber is not limited to them.

Besides, the present invention is not limited to the above-described embodiments, and various modifications can be carried out without departing from the scope of the invention.

[Effects of the Invention] As is apparent from the above description, the present invention has a cabinet body in which a first cooling chamber, a second cooling chamber, and a third cooling chamber are sequentially partitioned from inside to top, From the cooler chamber to the cooler chamber provided on the back wall of the first cooling chamber, and to the cool air blowout port that is provided so as to contact the inner surface of the back wall of the second cooling chamber and opens at the inner face of the back wall. A damper device for adjusting the amount of supplied cool air, and a return duct for circulating the cool air in the third cooling chamber to the cooler chamber, wherein the return duct is used for the second cooling. It is characterized in that it is configured to pass through a corner portion of the back wall and the side wall of the second cooling chamber at a position in contact with the inner surface of the back wall of the chamber and directly next to the damper device,
As a result, it is possible to eliminate the portion of the side wall of the second cooling chamber where the thickness becomes thin, and conversely, it is necessary to increase the overall thickness of the side wall by the return duct, as compared with the conventional case. The thickness of the side wall can be made evenly smaller, so
Since the effective internal volume of the second cooling chamber can be increased and the thickness of the wall of the storage body can be made uniform, the appearance can be improved, and a sufficient heat insulating thickness for the return duct can be secured. It is possible to prevent the temperature influence on the second cooling chamber, and further, the return duct can be easily positioned and the manufacturability can be improved.

[Brief description of drawings]

1 to 3 show an embodiment of the present invention. FIG. 1 is a cross-sectional plan view taken along the line I--I of FIG. 2, FIG. 2 is an overall broken side view, and FIG. It is a front view of a main body. And
4 to 6 show a conventional example, FIG. 4 is a view corresponding to FIG. 3, FIG. 5 is a view corresponding to FIG. 2, and FIG. 6 is a view corresponding to FIG. In the figure, 21 is a refrigerator main body, 22 is a freezing room (first cooling room), 23 is a switching room (second cooling room), 24 is a refrigerating room (third cooling room), 27 is a cooler, 28 Is a cooler room, 31a is a cool air outlet, 3
5 is a damper device and 41 is a return duct.

Claims (1)

[Claims] 1. A first cooling chamber (22) inside from the top to the bottom in order.
And a main body (21) formed by partitioning the second cooling chamber (23) and the third cooling chamber (24), and the first cooling chamber (22)
Of the cooler chamber (28) provided on the back wall of the second cooling chamber (23) and the inner surface (23a) of the back wall of the second cooling chamber (23), which is open at the inner surface (23a) of the back wall. (31a)
A damper device (35) for adjusting the amount of cool air supplied from the cooler chamber (28), and the third cooling chamber (24)
A return duct (41) for circulating cold air in the cooler chamber (28), the return duct (41) being connected to the inner surface (23) of the back wall of the second cooling chamber (23).
A refrigerator characterized in that a corner portion between a back wall and a side wall of the second cooling chamber (23) is passed through at a position adjacent to the damper device (35) in line with the damper device (35).